Reserach On Bicycle Riding Risk Of Bicycle-sharing Traffic Conflict Prone Area

In recent years,with the rapid development of bicycle-sharing,bicycle-sharing has become one of the elements of the urban traffic system.Bicycle sharing is in a weak position in traffic activities due to the lack of protective measures,The space of bicycle traffic is compressed,and the corresponding infrastructure is not perfect,and the unreasonable allocation of existing road resources,which increases the probability of accidents of bicycle-sharing and leds to a sharp rise in cycling risks for bicycle-sharing.The paper based on the actual survey data analyses the traffic characteristics of bicycle-sharing from four aspects:physical characteristics,traffic flow characteristics,use characteristics,travel time and space distribution characteristics.The paper starts from the influence of human-vehicle-road environment-management and control factors on the cycling risk of bicycle-sharing.Based on the results of actual investigation to analyses the risk points,the risk points include not only the merging point,diverging point,conflict point at the intersection,but also the transcendence point,gather point on the section which mixed traffic flow driving in,and the conflict point caused by non-compliance behavior,considered the particularity of bicycle-sharing and based on the existing risk assessment methods,proposes a risk assessment method of bicycle-sharing riding based on the traffic conflict.By analyzing the riding risk influencing factors of bicycle-sharing,the average speed of motor vehicles,the average speed of Shared bicycle and the variation coefficient of bicycle-sharing speed are taken as the evaluation parameters of the riding risk of bicycle-sharing,the average riding risk level of bicycle-sharing is taken as the evaluation indicators for the riding risk of bicycle-sharing.Based on the actual investigation at the intersection of Chegongzhuang Street and Chegongzhuang South Street in Beijing,the paper takes advantages of VISSIM to simulate the running state of bicycle-sharing,and use SSAM analyzing the running state of bicycle-sharing to get the relevant data of traffic conflict in the process during the riding of bicycle-sharing.The traffic conflict data are processed and analyzed,and establish a riding risk assessment model of bicycle-sharing based on R,and then test and modify the model,the analysis results show that the modified model is better in the fitting effect and more stable and consistent with the actual situation.Putting forward the riding risk control strategy of bicycle-sharing.Improving the travel conditions of bicycle sharing by improving and perfect the bicycle transportation network,and establishing and improving bicycle transportation infrastructure and restoring the right of way for bicycles in areas with heavy traffic.Establish and improve the bike system and standard system to ensure the safety of bicycle-sharing.It can provide some corresponding theories and methods for relevant departments to ensure the safety of bicycle-sharing.